Cholinergic synapses


Synapses that use acetylcholine are called cholinergic synapses.

1. Arrival of an action potential - 

  • An action potential arrives at the synaptic knob of the presynaptic neurone
  • The action potential stimulates voltage-gated calcium ion channels in the presynaptic neurone to open.
  • Calcium ions diffuse into the synaptic knob (they're pumped out afterwards by active transport)

2. Fusion of the vesicles - 

  • The influx of calcium ions into the synaptic knob causes the synaptic…


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